After crossing the ground floor lobby towards the turn styles of the Museum, the first collection lies before the visitor. An ascending, wide glass-floored gallery houses finds from the slopes of the Acropolis. The occasionally transparent floor provides a view of the archaeological excavation, while its upward slope alludes to the ascent to the Acropolis.

The Gallery of the Slopes of the Acropolis houses finds from the sanctuaries that were founded on the slopes of the Acropolis, as well as objects that Athenians used in everyday life from all historic periods. On the left hand side, finds from some of the key sanctuaries of the slopes are exhibited. On the right hand side, finds from the smaller sanctuaries and settlements that developed on the slopes of the Hill are displayed. In antiquity, the slopes of the Sacred Rock constituted the transition zone between the city and its most famous sanctuary. This was the area where official and popular cults, as well as large and small sanctuaries existed alongside private houses.